Now simplified with a single derailleur cage length, the Shimano Ultegra RD-R8150 Di2 12 Speed Rear Derailleur packs Shimano's fastest, most precise shifting into a more approachable option. The single cage length is compatible with up to 34T low sprockets, making it more versatile than ever.

Specifications
Fastest ever rear shifting - 58% faster than RD-R9150
Compact design includes an integrated wireless unit, charger and switch
LED status indicator for battery, pairing and adjust mode
Wider range capacity
Max. low sprocket: 34T

Mfr Claimed Weight
262g

Get race-fast wireless shifting with the Shimano Ultegra RD-R8150 Rear Derailleur, at CCACHE.